sh: Add do-nothing -h option.

POSIX requires a -h option to sh and set, to locate and remember utilities
invoked by functions as they are defined. Given that this
locate-and-remember process is optional elsewhere, it seems safe enough to
make this option do nothing.

POSIX does not specify a long name for this option. Follow ksh in calling it
"trackall".

1 files changed, 3 insertions, 1 deletions

diff --git a/bin/sh/options.h b/bin/sh/options.h
index f3d3d3d..acc2a11 100644
--- a/bin/sh/options.h
+++ b/bin/sh/options.h
@@ -62,8 +62,9 @@ struct shparam {
 #define	privileged optlist[15].val
 #define	Tflag optlist[16].val
 #define	Pflag optlist[17].val
+#define	hflag optlist[18].val
 
-#define NOPTS	18
+#define NOPTS	19
 
 struct optent {
 	const char *name;
@@ -91,6 +92,7 @@ struct optent optlist[NOPTS] = {
 	{ "privileged",	'p',	0 },
 	{ "trapsasync",	'T',	0 },
 	{ "physical",	'P',	0 },
+	{ "trackall",	'h',	0 },
 };
 #else
 extern struct optent optlist[NOPTS];